What was found
(CAN) AIRCRAFT HAD AN AFT BAGGAGE SMOKE WARNING ILLUMINATE DURING FLIGHT. CREW FOLLOWED QRH AND FIRED EXTINGUISHING BOTTLES. ON LANDING, FIRE CREWS DID NOT FIND ANY SIGNS OF FIRE OR SMOKE. -SMOKE DETCTORS WIRING CHECKS CARRIED OUT -SMOKE DETECTORS, BOTTLES, FDR/CVR REPLACED -CONTROL AMPLIFIER REPLACED AS PRECAUTIONARY MEASURE FIREX CONTROL AMP P/N 473872-03 S/N 119 HRS 19012 CYC 21763 SMOKE DETECTOR, FWD P/N 473597-15 S/N 572 HRS 2896 CYC 3368 SMOKE DETECTOR, FWD P/N 473597-15 S/N 357 HRS 19012 CYC 21763 IT IS POSSIBLE THAT THE NUISANCE BAGGAGE COMPARTMENT SMOKE ALARM WAS CAUSED BY A LEAKING AEROSOL CAN OR DIRTY LABYRINTH IN THE SMOKE DETECTOR. IT IS RECOMMENDED BY THE VENDOR THAT THE SMOKE DETECTORS BE CLEANED AT 18 MONTHS OR 2500 FLIGHT HOURS INTERVALS OR 12 MONTHS OR 2000 FLIGHT HOURS FOR ABNORMAL OPERATING ENVIRONMENTS. THE EVENT IS UNDER INVESTIGATION BY BOMBARDIER AND WAITING FOR SHOP REPORTS.